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METARPC / DEVELOPER GUIDES

Trade copying.
Built with Java.

From your first authenticated request to a monitored master–follower workflow. Clear examples, explicit sizing and practical recovery.

Start building → Explore the API
TLS transport · Owner authentication · Demo-first validation

  • 01 · Connect with confidence

    Understand keys, account IDs and transport before sending a request.

    Authentication →

  • 02 · Control the lifecycle

    Start once, inspect state, pause and clean up your test.

    Copier lifecycle →

  • 03 · Make sizing explicit

    Choose lot, balance or equity sizing and account for broker constraints.

    Sizing and settings →

  • 04 · Diagnose the result

    Separate network success from management success and broker execution.

    Troubleshooting →

Your first successful request

Requires JDK 11+ and Maven 3.8+. Install dependencies and run the read-only List example. Keep your key in MRPC_API_KEY.

import pro.mrpc.copier.CopierService;
import pro.mrpc.copier.Models;
public class ListCopiers {
    public static void main(String[] args) {
        try (CopierService service = new CopierService("https://copy.mrpc.pro", System.getenv("MRPC_API_KEY"))) {
            Models.ListReply result = service.list();
            if (!result.ok) throw new IllegalStateException(result.error);
            for (Models.CopierSummary item : result.copiers) System.out.println(item.id + ": paused=" + item.paused);
        }
    }
}

Full setup · Testing guide · All SDKs

Watch a real demo failure and recovery

Copier troubleshooting video follows an oversized follower request from its broker rejection through a corrected demo opening and closing. It demonstrates the control-panel workflow; the lifecycle recipes, sizing guide and error guide explain how to apply the checks in this SDK.

Use disposable demo accounts first. Hosted service usage is paid; consult current pricing. A successful management response does not prove that a broker executed the copied trade.